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Atomic Scientists

ScientistDateScientic Contributions
Thompson 1897-98 discoverd electrons by conducting experiments using a cathode ray tube
Rutherford 1909-11 1. proposed that in the center of the atom is a tiny, extremely dense, positively changed part called the nucleus. 2. empty space in atom
Bohr 1913 applied the quantum concept which restrics the energy of a system to certain distint values ti the problem of atomic and molecular structure
Chadwick 1932-39 theorized that atomic nuclei were too light to only contain 2 subatomic particles, he developed the idea of a neutron, a paricles, he developed the idea of of of a neutron, a particle with a neutral
Democurtis 460-370 BC continued diving particles you would eventually get a small indivisible particle.
Dalton 1803 1. all matter is made of atoms 2. atoms of the material are all alike
Created by: smileyk